# dd --version
dd (coreutils) 6.9
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
Written by Paul Rubin, David MacKenzie, and Stuart Kemp.

For usage instructions enter into the command-line interface:

dd --help

WARNING: YOU MUST KNOW WHAT YOU ARE DOING OTHERWISE ALL YOUR DATA MAY BE DESTROYED

Creating a cloned partition (sdb1) of unmountedsda1 partition (where the target partition must be greater in capacity)